Ms. Catherine Kee reports

TMX GROUP LIMITED ANNOUNCES APPROVAL OF AN AMENDMENT TO ITS NORMAL COURSE ISSUER BID

The Toronto Stock Exchange has approved an amendment to TMX Group Ltd.'s normal course issuer bid.

The amendment is intended to increase the maximum of TMX Group's issued and outstanding common shares that may be repurchased under the normal course issuer bid by allowing the repurchase of up to 5.6 million common shares, representing approximately 2 per cent of the 278,232,220 common shares outstanding on Feb. 20, 2026.

The normal course issuer bid, launched on Feb. 27, 2026, originally allowed TMX Group to repurchase up to 2.8 million common shares, representing approximately 1 per cent of its issued and outstanding common shares as at Feb. 20, 2026. As at May 7, 2026, TMX Group has repurchased 2,795,000 common shares at an average price of $50.95 under the current normal course issuer bid, representing 1.0 per cent of the issued and outstanding common shares as at Feb. 20, 2026.

The amendment will take effect on May 21, 2026. The normal course issuer bid will terminate on Feb. 26, 2027, or such earlier date as TMX Group completes its purchases. No other terms of the current normal course issuer bid have been amended.

TMX Group will make purchases in accordance with TSX requirements, and the price TMX Group will pay for any such common shares will be the market price of such shares at the time of acquisition. All purchases will be effected through the facilities of TSX. All repurchased shares will be cancelled.

TMX Group has a predefined plan with its designated broker to allow for the repurchase of common shares at times when TMX Group ordinarily would not be active in the market due to its own internal trading blackout periods, insider trading rules or otherwise. The actual number of common shares to be repurchased, the timing of such repurchases and the price at which the common shares will be repurchased will depend on future market conditions.

The maximum number of common shares that can be purchased on the same trading day on TSX is 155,315 shares (25 per cent of the average daily trading volume during the six full calendar months ended preceding the launch of the normal course issuer bid, being 621,261 common shares), other than block purchase exceptions.

About TMX Group Ltd.

TMX Group operates global markets, and builds digital communities and analytic solutions that facilitate the financing, growth and success of businesses, traders and investors. TMX Group's key operations include Toronto Stock Exchange, TSX Venture Exchange, TSX Alpha Exchange, The Canadian Depository for Securities, Montreal Exchange, Canadian Derivatives Clearing Corp., TSX Trust, TMX Trayport, TMX Datalinx, TMX VettaFi and TMX Newsfile, which provide listing markets, trading markets, clearing facilities, depository services, technology solutions, data products and other services to the global financial community. TMX Group is headquartered in Toronto and operates offices across North America (Montreal, Calgary, Vancouver and New York), as well as in key international markets, including London, Singapore and Vienna.

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